/* $Id: dvd.c,v 1.12 2005/11/25 15:05:25 titer Exp $ This file is part of the HandBrake source code. Homepage: . It may be used under the terms of the GNU General Public License. */ #include "hb.h" #include "lang.h" #include "dvd.h" #include "dvdnav/dvdnav.h" #include "dvdread/ifo_read.h" #include "dvdread/ifo_print.h" #include "dvdread/nav_read.h" #define DVD_READ_CACHE 1 static char * hb_dvdnav_name( char * path ); static hb_dvd_t * hb_dvdnav_init( char * path ); static int hb_dvdnav_title_count( hb_dvd_t * d ); static hb_title_t * hb_dvdnav_title_scan( hb_dvd_t * d, int t, uint64_t min_duration ); static int hb_dvdnav_start( hb_dvd_t * d, hb_title_t *title, int chapter ); static void hb_dvdnav_stop( hb_dvd_t * d ); static int hb_dvdnav_seek( hb_dvd_t * d, float f ); static int hb_dvdnav_read( hb_dvd_t * d, hb_buffer_t * b ); static int hb_dvdnav_chapter( hb_dvd_t * d ); static void hb_dvdnav_close( hb_dvd_t ** _d ); static int hb_dvdnav_angle_count( hb_dvd_t * d ); static void hb_dvdnav_set_angle( hb_dvd_t * d, int angle ); static int hb_dvdnav_main_feature( hb_dvd_t * d, hb_list_t * list_title ); hb_dvd_func_t hb_dvdnav_func = { hb_dvdnav_init, hb_dvdnav_close, hb_dvdnav_name, hb_dvdnav_title_count, hb_dvdnav_title_scan, hb_dvdnav_start, hb_dvdnav_stop, hb_dvdnav_seek, hb_dvdnav_read, hb_dvdnav_chapter, hb_dvdnav_angle_count, hb_dvdnav_set_angle, hb_dvdnav_main_feature }; // there can be at most 999 PGCs per title. round that up to the nearest // power of two. #define MAX_PGCN 1024 /*********************************************************************** * Local prototypes **********************************************************************/ static void PgcWalkInit( uint32_t pgcn_map[MAX_PGCN/32] ); static int FindChapterIndex( hb_list_t * list, int pgcn, int pgn ); static int NextPgcn( ifo_handle_t *ifo, int pgcn, uint32_t pgcn_map[MAX_PGCN/32] ); static int FindNextCell( pgc_t *pgc, int cell_cur ); static int dvdtime2msec( dvd_time_t * ); hb_dvd_func_t * hb_dvdnav_methods( void ) { return &hb_dvdnav_func; } static char * hb_dvdnav_name( char * path ) { static char name[1024]; unsigned char unused[1024]; dvd_reader_t * reader; reader = DVDOpen( path ); if( !reader ) { return NULL; } if( DVDUDFVolumeInfo( reader, name, sizeof( name ), unused, sizeof( unused ) ) ) { DVDClose( reader ); return NULL; } DVDClose( reader ); return name; } /*********************************************************************** * hb_dvdnav_reset *********************************************************************** * Once dvdnav has entered the 'stopped' state, it can not be revived * dvdnav_reset doesn't work because it doesn't remember the path * So this function re-opens dvdnav **********************************************************************/ static int hb_dvdnav_reset( hb_dvdnav_t * d ) { if ( d->dvdnav ) dvdnav_close( d->dvdnav ); /* Open device */ if( dvdnav_open(&d->dvdnav, d->path) != DVDNAV_STATUS_OK ) { /* * Not an error, may be a stream - which we'll try in a moment. */ hb_log( "dvd: not a dvd - trying as a stream/file instead" ); goto fail; } if (dvdnav_set_readahead_flag(d->dvdnav, DVD_READ_CACHE) != DVDNAV_STATUS_OK) { hb_error("Error: dvdnav_set_readahead_flag: %s\n", dvdnav_err_to_string(d->dvdnav)); goto fail; } /* ** set the PGC positioning flag to have position information ** relatively to the whole feature instead of just relatively to the ** current chapter **/ if (dvdnav_set_PGC_positioning_flag(d->dvdnav, 1) != DVDNAV_STATUS_OK) { hb_error("Error: dvdnav_set_PGC_positioning_flag: %s\n", dvdnav_err_to_string(d->dvdnav)); goto fail; } return 1; fail: if( d->dvdnav ) dvdnav_close( d->dvdnav ); return 0; } /*********************************************************************** * hb_dvdnav_init *********************************************************************** * **********************************************************************/ static hb_dvd_t * hb_dvdnav_init( char * path ) { hb_dvd_t * e; hb_dvdnav_t * d; int region_mask; e = calloc( sizeof( hb_dvd_t ), 1 ); d = &(e->dvdnav); /* Log DVD drive region code */ if ( hb_dvd_region( path, ®ion_mask ) == 0 ) { hb_log( "dvd: Region mask 0x%02x", region_mask ); if ( region_mask == 0xFF ) { hb_log( "dvd: Warning, DVD device has no region set" ); } } /* Open device */ if( dvdnav_open(&d->dvdnav, path) != DVDNAV_STATUS_OK ) { /* * Not an error, may be a stream - which we'll try in a moment. */ hb_log( "dvd: not a dvd - trying as a stream/file instead" ); goto fail; } if (dvdnav_set_readahead_flag(d->dvdnav, DVD_READ_CACHE) != DVDNAV_STATUS_OK) { hb_error("Error: dvdnav_set_readahead_flag: %s\n", dvdnav_err_to_string(d->dvdnav)); goto fail; } /* ** set the PGC positioning flag to have position information ** relatively to the whole feature instead of just relatively to the ** current chapter **/ if (dvdnav_set_PGC_positioning_flag(d->dvdnav, 1) != DVDNAV_STATUS_OK) { hb_error("Error: dvdnav_set_PGC_positioning_flag: %s\n", dvdnav_err_to_string(d->dvdnav)); goto fail; } /* Open device */ if( !( d->reader = DVDOpen( path ) ) ) { /* * Not an error, may be a stream - which we'll try in a moment. */ hb_log( "dvd: not a dvd - trying as a stream/file instead" ); goto fail; } /* Open main IFO */ if( !( d->vmg = ifoOpen( d->reader, 0 ) ) ) { hb_error( "dvd: ifoOpen failed" ); goto fail; } d->path = strdup( path ); return e; fail: if( d->dvdnav ) dvdnav_close( d->dvdnav ); if( d->vmg ) ifoClose( d->vmg ); if( d->reader ) DVDClose( d->reader ); free( e ); return NULL; } /*********************************************************************** * hb_dvdnav_title_count **********************************************************************/ static int hb_dvdnav_title_count( hb_dvd_t * e ) { int titles = 0; hb_dvdnav_t * d = &(e->dvdnav); dvdnav_get_number_of_titles(d->dvdnav, &titles); return titles; } static uint64_t PttDuration(ifo_handle_t *ifo, int ttn, int pttn, int *blocks, int *last_pgcn) { int pgcn, pgn; pgc_t * pgc; uint64_t duration = 0; int cell_start, cell_end; int i; // Initialize map of visited pgc's to prevent loops uint32_t pgcn_map[MAX_PGCN/32]; PgcWalkInit( pgcn_map ); pgcn = ifo->vts_ptt_srpt->title[ttn-1].ptt[pttn-1].pgcn; pgn = ifo->vts_ptt_srpt->title[ttn-1].ptt[pttn-1].pgn; if ( pgcn < 1 || pgcn > ifo->vts_pgcit->nr_of_pgci_srp || pgcn >= MAX_PGCN) { hb_error( "invalid PGC ID %d, skipping", pgcn ); return 0; } if( pgn <= 0 || pgn > 99 ) { hb_error( "scan: pgn %d not valid, skipping", pgn ); return 0; } *blocks = 0; do { pgc = ifo->vts_pgcit->pgci_srp[pgcn-1].pgc; if (!pgc) { hb_error( "scan: pgc not valid, skipping" ); break; } if (pgn > pgc->nr_of_programs) { pgn = 1; continue; } duration += 90LL * dvdtime2msec( &pgc->playback_time ); cell_start = pgc->program_map[pgn-1] - 1; cell_end = pgc->nr_of_cells - 1; for(i = cell_start; i <= cell_end; i = FindNextCell(pgc, i)) { *blocks += pgc->cell_playback[i].last_sector + 1 - pgc->cell_playback[i].first_sector; } *last_pgcn = pgcn; pgn = 1; } while((pgcn = NextPgcn(ifo, pgcn, pgcn_map)) != 0); return duration; } /*********************************************************************** * hb_dvdnav_title_scan **********************************************************************/ static hb_title_t * hb_dvdnav_title_scan( hb_dvd_t * e, int t, uint64_t min_duration ) { hb_dvdnav_t * d = &(e->dvdnav); hb_title_t * title; ifo_handle_t * ifo = NULL; int pgcn, pgn, pgcn_end, i, c; int title_pgcn; pgc_t * pgc; int cell_cur; hb_chapter_t * chapter; int count; uint64_t duration, longest; int longest_pgcn, longest_pgn, longest_pgcn_end; float duration_correction; const char * name; hb_log( "scan: scanning title %d", t ); title = hb_title_init( d->path, t ); title->type = HB_DVD_TYPE; if (dvdnav_get_title_string(d->dvdnav, &name) == DVDNAV_STATUS_OK) { strncpy( title->name, name, sizeof( title->name ) ); } else { char * p_cur, * p_last = d->path; for( p_cur = d->path; *p_cur; p_cur++ ) { if( p_cur[0] == '/' && p_cur[1] ) { p_last = &p_cur[1]; } } snprintf( title->name, sizeof( title->name ), "%s", p_last ); } /* VTS which our title is in */ title->vts = d->vmg->tt_srpt->title[t-1].title_set_nr; if ( !title->vts ) { /* A VTS of 0 means the title wasn't found in the title set */ hb_error("Invalid VTS (title set) number: %i", title->vts); goto fail; } hb_log( "scan: opening IFO for VTS %d", title->vts ); if( !( ifo = ifoOpen( d->reader, title->vts ) ) ) { hb_error( "scan: ifoOpen failed" ); goto fail; } /* ignore titles with bogus cell addresses so we don't abort later ** in libdvdread. */ for ( i = 0; i < ifo->vts_c_adt->nr_of_vobs; ++i) { if( (ifo->vts_c_adt->cell_adr_table[i].start_sector & 0xffffff ) == 0xffffff ) { hb_error( "scan: cell_adr_table[%d].start_sector invalid (0x%x) " "- skipping title", i, ifo->vts_c_adt->cell_adr_table[i].start_sector ); goto fail; } if( (ifo->vts_c_adt->cell_adr_table[i].last_sector & 0xffffff ) == 0xffffff ) { hb_error( "scan: cell_adr_table[%d].last_sector invalid (0x%x) " "- skipping title", i, ifo->vts_c_adt->cell_adr_table[i].last_sector ); goto fail; } if( ifo->vts_c_adt->cell_adr_table[i].start_sector >= ifo->vts_c_adt->cell_adr_table[i].last_sector ) { hb_error( "scan: cell_adr_table[%d].start_sector (0x%x) " "is not before last_sector (0x%x) - skipping title", i, ifo->vts_c_adt->cell_adr_table[i].start_sector, ifo->vts_c_adt->cell_adr_table[i].last_sector ); goto fail; } } if( global_verbosity_level == 3 ) { ifo_print( d->reader, title->vts ); } /* Position of the title in the VTS */ title->ttn = d->vmg->tt_srpt->title[t-1].vts_ttn; if ( title->ttn < 1 || title->ttn > ifo->vts_ptt_srpt->nr_of_srpts ) { hb_error( "invalid VTS PTT offset %d for title %d, skipping", title->ttn, t ); goto fail; } longest = 0LL; longest_pgcn = -1; longest_pgn = 1; longest_pgcn_end = -1; pgcn_end = -1; for( i = 0; i < ifo->vts_ptt_srpt->title[title->ttn-1].nr_of_ptts; i++ ) { int blocks = 0; duration = PttDuration(ifo, title->ttn, i+1, &blocks, &pgcn_end); pgcn = ifo->vts_ptt_srpt->title[title->ttn-1].ptt[i].pgcn; pgn = ifo->vts_ptt_srpt->title[title->ttn-1].ptt[i].pgn; if( duration > longest ) { longest_pgcn = pgcn; longest_pgn = pgn; longest_pgcn_end = pgcn_end; longest = duration; title->block_count = blocks; } else if (pgcn == longest_pgcn && pgn < longest_pgn) { longest_pgn = pgn; title->block_count = blocks; } } /* Get duration */ title->duration = longest; title->hours = title->duration / 90000 / 3600; title->minutes = ( ( title->duration / 90000 ) % 3600 ) / 60; title->seconds = ( title->duration / 90000 ) % 60; hb_log( "scan: duration is %02d:%02d:%02d (%"PRId64" ms)", title->hours, title->minutes, title->seconds, title->duration / 90 ); /* ignore titles under 10 seconds because they're often stills or * clips with no audio & our preview code doesn't currently handle * either of these. */ if( longest < min_duration ) { hb_log( "scan: ignoring title (too short)" ); goto fail; } pgcn = longest_pgcn; pgcn_end = longest_pgcn_end; pgn = longest_pgn;; title_pgcn = pgcn; /* Get pgc */ if ( pgcn < 1 || pgcn > ifo->vts_pgcit->nr_of_pgci_srp || pgcn >= MAX_PGCN) { hb_error( "invalid PGC ID %d for title %d, skipping", pgcn, t ); goto fail; } pgc = ifo->vts_pgcit->pgci_srp[pgcn-1].pgc; hb_log("pgc_id: %d, pgn: %d: pgc: %p", pgcn, pgn, pgc); if (pgn > pgc->nr_of_programs) { hb_error( "invalid PGN %d for title %d, skipping", pgn, t ); goto fail; } /* Title start */ title->cell_start = pgc->program_map[pgn-1] - 1; title->block_start = pgc->cell_playback[title->cell_start].first_sector; pgc = ifo->vts_pgcit->pgci_srp[pgcn_end-1].pgc; /* Title end */ title->cell_end = pgc->nr_of_cells - 1; title->block_end = pgc->cell_playback[title->cell_end].last_sector; hb_log( "scan: vts=%d, ttn=%d, cells=%d->%d, blocks=%"PRIu64"->%"PRIu64", " "%"PRIu64" blocks", title->vts, title->ttn, title->cell_start, title->cell_end, title->block_start, title->block_end, title->block_count ); /* Detect languages */ for( i = 0; i < ifo->vtsi_mat->nr_of_vts_audio_streams; i++ ) { hb_audio_t * audio, * audio_tmp; int audio_format, lang_code, audio_control, position, j; iso639_lang_t * lang; int lang_extension = 0; hb_log( "scan: checking audio %d", i + 1 ); audio = calloc( sizeof( hb_audio_t ), 1 ); audio_format = ifo->vtsi_mat->vts_audio_attr[i].audio_format; lang_code = ifo->vtsi_mat->vts_audio_attr[i].lang_code; lang_extension = ifo->vtsi_mat->vts_audio_attr[i].code_extension; audio_control = ifo->vts_pgcit->pgci_srp[title_pgcn-1].pgc->audio_control[i]; if( !( audio_control & 0x8000 ) ) { hb_log( "scan: audio channel is not active" ); free( audio ); continue; } position = ( audio_control & 0x7F00 ) >> 8; switch( audio_format ) { case 0x00: audio->id = ( ( 0x80 + position ) << 8 ) | 0xbd; audio->config.in.codec = HB_ACODEC_AC3; break; case 0x02: case 0x03: audio->id = 0xc0 + position; audio->config.in.codec = HB_ACODEC_MPGA; break; case 0x04: audio->id = ( ( 0xa0 + position ) << 8 ) | 0xbd; audio->config.in.codec = HB_ACODEC_LPCM; break; case 0x06: audio->id = ( ( 0x88 + position ) << 8 ) | 0xbd; audio->config.in.codec = HB_ACODEC_DCA; break; default: audio->id = 0; audio->config.in.codec = 0; hb_log( "scan: unknown audio codec (%x)", audio_format ); break; } if( !audio->id ) { continue; } /* Check for duplicate tracks */ audio_tmp = NULL; for( j = 0; j < hb_list_count( title->list_audio ); j++ ) { audio_tmp = hb_list_item( title->list_audio, j ); if( audio->id == audio_tmp->id ) { break; } audio_tmp = NULL; } if( audio_tmp ) { hb_log( "scan: duplicate audio track" ); free( audio ); continue; } audio->config.lang.type = lang_extension; lang = lang_for_code( ifo->vtsi_mat->vts_audio_attr[i].lang_code ); snprintf( audio->config.lang.description, sizeof( audio->config.lang.description ), "%s (%s)", strlen(lang->native_name) ? lang->native_name : lang->eng_name, audio->config.in.codec == HB_ACODEC_AC3 ? "AC3" : ( audio->config.in.codec == HB_ACODEC_DCA ? "DTS" : ( audio->config.in.codec == HB_ACODEC_MPGA ? "MPEG" : "LPCM" ) ) ); snprintf( audio->config.lang.simple, sizeof( audio->config.lang.simple ), "%s", strlen(lang->native_name) ? lang->native_name : lang->eng_name ); snprintf( audio->config.lang.iso639_2, sizeof( audio->config.lang.iso639_2 ), "%s", lang->iso639_2); switch( lang_extension ) { case 0: case 1: break; case 2: strcat( audio->config.lang.description, " (Visually Impaired)" ); break; case 3: strcat( audio->config.lang.description, " (Director's Commentary 1)" ); break; case 4: strcat( audio->config.lang.description, " (Director's Commentary 2)" ); break; default: break; } hb_log( "scan: id=%x, lang=%s, 3cc=%s ext=%i", audio->id, audio->config.lang.description, audio->config.lang.iso639_2, lang_extension ); audio->config.in.track = i; hb_list_add( title->list_audio, audio ); } /* Check for subtitles */ for( i = 0; i < ifo->vtsi_mat->nr_of_vts_subp_streams; i++ ) { hb_subtitle_t * subtitle; int spu_control; int position; iso639_lang_t * lang; int lang_extension = 0; hb_log( "scan: checking subtitle %d", i + 1 ); spu_control = ifo->vts_pgcit->pgci_srp[title_pgcn-1].pgc->subp_control[i]; if( !( spu_control & 0x80000000 ) ) { hb_log( "scan: subtitle channel is not active" ); continue; } if( ifo->vtsi_mat->vts_video_attr.display_aspect_ratio ) { switch( ifo->vtsi_mat->vts_video_attr.permitted_df ) { case 1: position = spu_control & 0xFF; break; case 2: position = ( spu_control >> 8 ) & 0xFF; break; default: position = ( spu_control >> 16 ) & 0xFF; } } else { position = ( spu_control >> 24 ) & 0x7F; } lang_extension = ifo->vtsi_mat->vts_subp_attr[i].code_extension; lang = lang_for_code( ifo->vtsi_mat->vts_subp_attr[i].lang_code ); subtitle = calloc( sizeof( hb_subtitle_t ), 1 ); subtitle->track = i+1; subtitle->id = ( ( 0x20 + position ) << 8 ) | 0xbd; snprintf( subtitle->lang, sizeof( subtitle->lang ), "%s", strlen(lang->native_name) ? lang->native_name : lang->eng_name); snprintf( subtitle->iso639_2, sizeof( subtitle->iso639_2 ), "%s", lang->iso639_2); subtitle->format = PICTURESUB; subtitle->source = VOBSUB; subtitle->config.dest = RENDERSUB; // By default render (burn-in) the VOBSUB. subtitle->type = lang_extension; memcpy( subtitle->palette, ifo->vts_pgcit->pgci_srp[title_pgcn-1].pgc->palette, 16 * sizeof( uint32_t ) ); switch( lang_extension ) { case 0: break; case 1: break; case 2: strcat( subtitle->lang, " (Caption with bigger size character)"); break; case 3: strcat( subtitle->lang, " (Caption for Children)"); break; case 4: break; case 5: strcat( subtitle->lang, " (Closed Caption)"); break; case 6: strcat( subtitle->lang, " (Closed Caption with bigger size character)"); break; case 7: strcat( subtitle->lang, " (Closed Caption for Children)"); break; case 8: break; case 9: strcat( subtitle->lang, " (Forced Caption)"); break; case 10: break; case 11: break; case 12: break; case 13: strcat( subtitle->lang, " (Director's Commentary)"); break; case 14: strcat( subtitle->lang, " (Director's Commentary with bigger size character)"); break; case 15: strcat( subtitle->lang, " (Director's Commentary for Children)"); default: break; } hb_log( "scan: id=%x, lang=%s, 3cc=%s", subtitle->id, subtitle->lang, subtitle->iso639_2 ); hb_list_add( title->list_subtitle, subtitle ); } /* Chapters */ uint32_t pgcn_map[MAX_PGCN/32]; PgcWalkInit( pgcn_map ); c = 0; do { pgc = ifo->vts_pgcit->pgci_srp[pgcn-1].pgc; for (i = pgn; i <= pgc->nr_of_programs; i++) { chapter = calloc( sizeof( hb_chapter_t ), 1 ); chapter->index = c + 1; chapter->pgcn = pgcn; chapter->pgn = i; hb_list_add( title->list_chapter, chapter ); c++; } pgn = 1; } while ((pgcn = NextPgcn(ifo, pgcn, pgcn_map)) != 0); hb_log( "scan: title %d has %d chapters", t, c ); duration = 0; count = hb_list_count( title->list_chapter ); for (i = 0; i < count; i++) { chapter = hb_list_item( title->list_chapter, i ); pgcn = chapter->pgcn; pgn = chapter->pgn; pgc = ifo->vts_pgcit->pgci_srp[pgcn-1].pgc; /* Start cell */ chapter->cell_start = pgc->program_map[pgn-1] - 1; chapter->block_start = pgc->cell_playback[chapter->cell_start].first_sector; // if there are no more programs in this pgc, the end cell is the // last cell. Otherwise it's the cell before the start cell of the // next program. if ( pgn == pgc->nr_of_programs ) { chapter->cell_end = pgc->nr_of_cells - 1; } else { chapter->cell_end = pgc->program_map[pgn] - 2;; } chapter->block_end = pgc->cell_playback[chapter->cell_end].last_sector; /* Block count, duration */ chapter->block_count = 0; chapter->duration = 0; cell_cur = chapter->cell_start; while( cell_cur <= chapter->cell_end ) { #define cp pgc->cell_playback[cell_cur] chapter->block_count += cp.last_sector + 1 - cp.first_sector; chapter->duration += 90LL * dvdtime2msec( &cp.playback_time ); #undef cp cell_cur = FindNextCell( pgc, cell_cur ); } duration += chapter->duration; } /* The durations we get for chapters aren't precise. Scale them so the total matches the title duration */ duration_correction = (float) title->duration / (float) duration; for( i = 0; i < hb_list_count( title->list_chapter ); i++ ) { int seconds; chapter = hb_list_item( title->list_chapter, i ); chapter->duration = duration_correction * chapter->duration; seconds = ( chapter->duration + 45000 ) / 90000; chapter->hours = seconds / 3600; chapter->minutes = ( seconds % 3600 ) / 60; chapter->seconds = seconds % 60; hb_log( "scan: chap %d c=%d->%d, b=%"PRIu64"->%"PRIu64" (%"PRIu64"), %"PRId64" ms", chapter->index, chapter->cell_start, chapter->cell_end, chapter->block_start, chapter->block_end, chapter->block_count, chapter->duration / 90 ); } /* Get aspect. We don't get width/height/rate infos here as they tend to be wrong */ switch( ifo->vtsi_mat->vts_video_attr.display_aspect_ratio ) { case 0: title->container_aspect = 4. / 3.; break; case 3: title->container_aspect = 16. / 9.; break; default: hb_log( "scan: unknown aspect" ); goto fail; } hb_log( "scan: aspect = %g", title->aspect ); /* This title is ok so far */ goto cleanup; fail: hb_list_close( &title->list_audio ); free( title ); title = NULL; cleanup: if( ifo ) ifoClose( ifo ); return title; } /*********************************************************************** * hb_dvdnav_title_scan **********************************************************************/ static int find_title( hb_list_t * list_title, int title ) { int ii; for ( ii = 0; ii < hb_list_count( list_title ); ii++ ) { hb_title_t * hbtitle = hb_list_item( list_title, ii ); if ( hbtitle->index == title ) return ii; } return -1; } static void skip_some( dvdnav_t * dvdnav, int blocks ) { int ii; int result, event, len; uint8_t buf[HB_DVD_READ_BUFFER_SIZE]; for ( ii = 0; ii < blocks; ii++ ) { result = dvdnav_get_next_block( dvdnav, buf, &event, &len ); if ( result == DVDNAV_STATUS_ERR ) { hb_error("dvdnav: Read Error, %s", dvdnav_err_to_string(dvdnav)); return; } switch ( event ) { case DVDNAV_BLOCK_OK: break; case DVDNAV_CELL_CHANGE: { } break; case DVDNAV_STILL_FRAME: dvdnav_still_skip( dvdnav ); break; case DVDNAV_WAIT: dvdnav_wait_skip( dvdnav ); break; case DVDNAV_STOP: return; case DVDNAV_HOP_CHANNEL: break; case DVDNAV_NAV_PACKET: break; case DVDNAV_VTS_CHANGE: { dvdnav_vts_change_event_t *event; event = (dvdnav_vts_change_event_t*)buf; // Some discs initialize the vts with the "first play" item // and some don't seem to. So if we see it is uninitialized, // set it. if ( event->new_vtsN <= 0 ) result = dvdnav_title_play( dvdnav, 1 ); } break; case DVDNAV_HIGHLIGHT: break; case DVDNAV_AUDIO_STREAM_CHANGE: break; case DVDNAV_SPU_STREAM_CHANGE: break; case DVDNAV_SPU_CLUT_CHANGE: break; case DVDNAV_NOP: break; default: break; } } } static int try_button( dvdnav_t * dvdnav, int menu_id, int button, hb_list_t * list_title ) { int result, event, len; uint8_t buf[HB_DVD_READ_BUFFER_SIZE]; int ii, jj; int32_t cur_title, title, pgcn, pgn; uint64_t longest_duration = 0; int longest = -1; pci_t *pci = dvdnav_get_current_nav_pci( dvdnav ); result = dvdnav_button_select_and_activate( dvdnav, pci, button + 1 ); if (result != DVDNAV_STATUS_OK) { hb_log("dvdnav_button_select_and_activate: %s", dvdnav_err_to_string(dvdnav)); } result = dvdnav_current_title_program( dvdnav, &title, &pgcn, &pgn ); if (result != DVDNAV_STATUS_OK) hb_log("dvdnav cur pgcn err: %s", dvdnav_err_to_string(dvdnav)); if ( title > 0 ) { hb_title_t * hbtitle; int index; index = find_title( list_title, title ); hbtitle = hb_list_item( list_title, index ); if ( hbtitle != NULL ) { if ( hbtitle->duration > longest_duration ) { longest_duration = hbtitle->duration; longest = title; } } // If the duration is longer than 10min, assume // this isn't garbage leading to something bigger. if ( longest_duration / 90000 > 10 * 60 ) { return longest; } } cur_title = title; for (jj = 0; jj < 5; jj++) { for (ii = 0; ii < 2000; ii++) { result = dvdnav_get_next_block( dvdnav, buf, &event, &len ); if ( result == DVDNAV_STATUS_ERR ) { hb_error("dvdnav: Read Error, %s", dvdnav_err_to_string(dvdnav)); return 0; } switch ( event ) { case DVDNAV_BLOCK_OK: break; case DVDNAV_CELL_CHANGE: { result = dvdnav_current_title_program( dvdnav, &title, &pgcn, &pgn ); if (result != DVDNAV_STATUS_OK) hb_log("dvdnav cur pgcn err: %s", dvdnav_err_to_string(dvdnav)); if ( title != cur_title && title > 0 ) { hb_title_t * hbtitle; int index; index = find_title( list_title, title ); hbtitle = hb_list_item( list_title, index ); if ( hbtitle != NULL ) { if ( hbtitle->duration > longest_duration ) { longest_duration = hbtitle->duration; longest = title; } } // If the duration is longer than 10min, assume // this isn't garbage leading to something bigger. if ( longest_duration / 90000 > 10 * 60 ) { return longest; } } cur_title = title; if (title > 0) { result = dvdnav_next_pg_search( dvdnav ); if ( result != DVDNAV_STATUS_OK ) { return longest; } } } break; case DVDNAV_STILL_FRAME: dvdnav_still_skip( dvdnav ); break; case DVDNAV_WAIT: dvdnav_wait_skip( dvdnav ); break; case DVDNAV_STOP: return 0; case DVDNAV_HOP_CHANNEL: break; case DVDNAV_NAV_PACKET: { } break; case DVDNAV_VTS_CHANGE: { result = dvdnav_current_title_program( dvdnav, &title, &pgcn, &pgn ); if (result != DVDNAV_STATUS_OK) hb_log("dvdnav cur pgcn err: %s", dvdnav_err_to_string(dvdnav)); if ( title != cur_title && title > 0 ) { hb_title_t * hbtitle; int index; index = find_title( list_title, title ); hbtitle = hb_list_item( list_title, index ); if ( hbtitle != NULL ) { if ( hbtitle->duration > longest_duration ) { longest_duration = hbtitle->duration; longest = title; } } if ( longest_duration / 90000 > 10 * 60 ) { return longest; } } cur_title = title; } break; case DVDNAV_HIGHLIGHT: break; case DVDNAV_AUDIO_STREAM_CHANGE: break; case DVDNAV_SPU_STREAM_CHANGE: break; case DVDNAV_SPU_CLUT_CHANGE: break; case DVDNAV_NOP: break; default: break; } } if (cur_title > 0) { // Some titles have long lead-ins. Try skipping it. dvdnav_next_pg_search( dvdnav ); } } return longest; } static int try_menu( hb_dvdnav_t * d, hb_list_t * list_title, DVDMenuID_t menu, uint64_t fallback_duration ) { int result, event, len; uint8_t buf[HB_DVD_READ_BUFFER_SIZE]; int ii, jj; int32_t cur_title, title, pgcn, pgn; uint64_t longest_duration = 0; int longest = -1; result = dvdnav_menu_call( d->dvdnav, menu ); if ( result != DVDNAV_STATUS_OK ) { // Sometimes the "first play" item doesn't initialize the // initial VTS. So do it here. result = dvdnav_title_play( d->dvdnav, 1 ); result = dvdnav_menu_call( d->dvdnav, menu ); if ( result != DVDNAV_STATUS_OK ) { hb_error("dvdnav: Can not set dvd menu, %s", dvdnav_err_to_string(d->dvdnav)); goto done; } } result = dvdnav_current_title_program( d->dvdnav, &title, &pgcn, &pgn ); if (result != DVDNAV_STATUS_OK) hb_log("dvdnav cur pgcn err: %s", dvdnav_err_to_string(d->dvdnav)); cur_title = title; for (jj = 0; jj < 4; jj++) { for (ii = 0; ii < 4000; ii++) { result = dvdnav_get_next_block( d->dvdnav, buf, &event, &len ); if ( result == DVDNAV_STATUS_ERR ) { hb_error("dvdnav: Read Error, %s", dvdnav_err_to_string(d->dvdnav)); goto done; } switch ( event ) { case DVDNAV_BLOCK_OK: break; case DVDNAV_CELL_CHANGE: { result = dvdnav_current_title_program( d->dvdnav, &title, &pgcn, &pgn ); if (result != DVDNAV_STATUS_OK) hb_log("dvdnav cur pgcn err: %s", dvdnav_err_to_string(d->dvdnav)); cur_title = title; } break; case DVDNAV_STILL_FRAME: dvdnav_still_skip( d->dvdnav ); break; case DVDNAV_WAIT: dvdnav_wait_skip( d->dvdnav ); break; case DVDNAV_STOP: goto done; case DVDNAV_HOP_CHANNEL: break; case DVDNAV_NAV_PACKET: { pci_t *pci = dvdnav_get_current_nav_pci( d->dvdnav ); int kk; int buttons; if ( pci == NULL ) break; buttons = pci->hli.hl_gi.btn_ns; if ( cur_title == 0 && buttons > 1 ) { int menu_title, menu_id; result = dvdnav_current_title_info( d->dvdnav, &menu_title, &menu_id ); if (result != DVDNAV_STATUS_OK) hb_log("dvdnav cur pgcn err: %s", dvdnav_err_to_string(d->dvdnav)); for (kk = 0; kk < buttons; kk++) { dvdnav_t *dvdnav_copy; result = dvdnav_dup( &dvdnav_copy, d->dvdnav ); if (result != DVDNAV_STATUS_OK) { hb_log("dvdnav dup failed: %s", dvdnav_err_to_string(d->dvdnav)); goto done; } title = try_button( dvdnav_copy, menu_id, kk, list_title ); dvdnav_free_dup( dvdnav_copy ); if ( title >= 0 ) { hb_title_t * hbtitle; int index; index = find_title( list_title, title ); hbtitle = hb_list_item( list_title, index ); if ( hbtitle != NULL ) { if ( hbtitle->duration > longest_duration ) { longest_duration = hbtitle->duration; longest = title; if ((float)fallback_duration * 0.75 < longest_duration) goto done; } } } } goto done; } if ( cur_title == 0 && buttons == 1 ) { dvdnav_button_select_and_activate( d->dvdnav, pci, 1 ); } } break; case DVDNAV_VTS_CHANGE: { result = dvdnav_current_title_program( d->dvdnav, &title, &pgcn, &pgn ); if (result != DVDNAV_STATUS_OK) hb_log("dvdnav cur pgcn err: %s", dvdnav_err_to_string(d->dvdnav)); cur_title = title; } break; case DVDNAV_HIGHLIGHT: break; case DVDNAV_AUDIO_STREAM_CHANGE: break; case DVDNAV_SPU_STREAM_CHANGE: break; case DVDNAV_SPU_CLUT_CHANGE: break; case DVDNAV_NOP: break; default: break; } } // Sometimes the menu is preceeded by a intro that just // gets restarted when hitting the menu button. So // try skipping with the skip forward button. Then // try hitting the menu again. if ( !(jj & 1) ) dvdnav_next_pg_search( d->dvdnav ); else result = dvdnav_menu_call( d->dvdnav, menu ); } done: return longest; } static int hb_dvdnav_main_feature( hb_dvd_t * e, hb_list_t * list_title ) { hb_dvdnav_t * d = &(e->dvdnav); int longest_root; int longest_title = 0; int longest_fallback = 0; int ii; uint64_t longest_duration_root = 0; uint64_t longest_duration_title = 0; uint64_t longest_duration_fallback = 0; for ( ii = 0; ii < hb_list_count( list_title ); ii++ ) { hb_title_t * title = hb_list_item( list_title, ii ); if ( title->duration > longest_duration_fallback ) { longest_duration_fallback = title->duration; longest_fallback = title->index; } } dvdnav_reset( d->dvdnav ); skip_some( d->dvdnav, 500 ); longest_root = try_menu( d, list_title, DVD_MENU_Root, longest_duration_fallback ); if ( longest_root >= 0 ) { hb_title_t * hbtitle; int index; index = find_title( list_title, longest_root ); hbtitle = hb_list_item( list_title, index ); if ( hbtitle ) longest_duration_root = hbtitle->duration; } if ( longest_root < 0 || (float)longest_duration_fallback * 0.7 > longest_duration_root) { longest_title = try_menu( d, list_title, DVD_MENU_Title, longest_duration_fallback ); if ( longest_title >= 0 ) { hb_title_t * hbtitle; int index; index = find_title( list_title, longest_title ); hbtitle = hb_list_item( list_title, index ); if ( hbtitle ) longest_duration_title = hbtitle->duration; } } uint64_t longest_duration; int longest; if ( longest_duration_root > longest_duration_title ) { longest_duration = longest_duration_root; longest = longest_root; } else { longest_duration = longest_duration_title; longest = longest_title; } if ((float)longest_duration_fallback * 0.7 > longest_duration) { longest = longest_fallback; } return longest; } /*********************************************************************** * hb_dvdnav_start *********************************************************************** * Title and chapter start at 1 **********************************************************************/ static int hb_dvdnav_start( hb_dvd_t * e, hb_title_t *title, int c ) { hb_dvdnav_t * d = &(e->dvdnav); int t = title->index; hb_chapter_t *chapter; dvdnav_status_t result; d->title_block_count = title->block_count; d->list_chapter = title->list_chapter; if ( d->stopped && !hb_dvdnav_reset(d) ) { return 0; } dvdnav_reset( d->dvdnav ); chapter = hb_list_item( title->list_chapter, c - 1); if (chapter != NULL) result = dvdnav_program_play(d->dvdnav, t, chapter->pgcn, chapter->pgn); else result = dvdnav_part_play(d->dvdnav, t, 1); if (result != DVDNAV_STATUS_OK) { hb_error( "dvd: dvdnav_*_play failed - %s", dvdnav_err_to_string(d->dvdnav) ); return 0; } d->title = t; d->stopped = 0; d->chapter = 0; return 1; } /*********************************************************************** * hb_dvdnav_stop *********************************************************************** * **********************************************************************/ static void hb_dvdnav_stop( hb_dvd_t * e ) { } /*********************************************************************** * hb_dvdnav_seek *********************************************************************** * **********************************************************************/ static int hb_dvdnav_seek( hb_dvd_t * e, float f ) { hb_dvdnav_t * d = &(e->dvdnav); uint64_t sector = f * d->title_block_count; int result, event, len; uint8_t buf[HB_DVD_READ_BUFFER_SIZE]; int done = 0, ii; if (d->stopped) { return 0; } // XXX the current version of libdvdnav can't seek outside the current // PGC. Check if the place we're seeking to is in a different // PGC. Position there & adjust the offset if so. uint64_t pgc_offset = 0; uint64_t chap_offset = 0; hb_chapter_t *pgc_change = hb_list_item(d->list_chapter, 0 ); for ( ii = 0; ii < hb_list_count( d->list_chapter ); ++ii ) { hb_chapter_t *chapter = hb_list_item( d->list_chapter, ii ); uint64_t chap_len = chapter->block_end - chapter->block_start + 1; if ( chapter->pgcn != pgc_change->pgcn ) { // this chapter's in a different pgc from the previous - note the // change so we can make sector offset's be pgc relative. pgc_offset = chap_offset; pgc_change = chapter; } if ( chap_offset <= sector && sector < chap_offset + chap_len ) { // this chapter contains the sector we want - see if it's in a // different pgc than the one we're currently in. int32_t title, pgcn, pgn; if (dvdnav_current_title_program( d->dvdnav, &title, &pgcn, &pgn ) != DVDNAV_STATUS_OK) hb_log("dvdnav cur pgcn err: %s", dvdnav_err_to_string(d->dvdnav)); // If we find ourselves in a new title, it means a title // transition was made while reading data. Jumping between // titles can cause the vm to get into a bad state. So // reset the vm in this case. if ( d->title != title ) dvdnav_reset( d->dvdnav ); if ( d->title != title || chapter->pgcn != pgcn ) { // this chapter is in a different pgc - switch to it. if (dvdnav_program_play(d->dvdnav, d->title, chapter->pgcn, chapter->pgn) != DVDNAV_STATUS_OK) hb_log("dvdnav prog play err: %s", dvdnav_err_to_string(d->dvdnav)); } // seek sectors are pgc-relative so remove the pgc start sector. sector -= pgc_offset; break; } chap_offset += chap_len; } // dvdnav will not let you seek or poll current position // till it reaches a certain point in parsing. so we // have to get blocks until we reach a cell // Put an arbitrary limit of 100 blocks on how long we search for (ii = 0; ii < 100 && !done; ii++) { result = dvdnav_get_next_block( d->dvdnav, buf, &event, &len ); if ( result == DVDNAV_STATUS_ERR ) { hb_error("dvdnav: Read Error, %s", dvdnav_err_to_string(d->dvdnav)); return 0; } switch ( event ) { case DVDNAV_BLOCK_OK: case DVDNAV_CELL_CHANGE: done = 1; break; case DVDNAV_STILL_FRAME: dvdnav_still_skip( d->dvdnav ); break; case DVDNAV_WAIT: dvdnav_wait_skip( d->dvdnav ); break; case DVDNAV_STOP: hb_log("dvdnav: stop encountered during seek"); d->stopped = 1; return 0; case DVDNAV_HOP_CHANNEL: case DVDNAV_NAV_PACKET: case DVDNAV_VTS_CHANGE: case DVDNAV_HIGHLIGHT: case DVDNAV_AUDIO_STREAM_CHANGE: case DVDNAV_SPU_STREAM_CHANGE: case DVDNAV_SPU_CLUT_CHANGE: case DVDNAV_NOP: default: break; } } if (dvdnav_sector_search(d->dvdnav, sector, SEEK_SET) != DVDNAV_STATUS_OK) { hb_error( "dvd: dvdnav_sector_search failed - %s", dvdnav_err_to_string(d->dvdnav) ); return 0; } return 1; } /*********************************************************************** * hb_dvdnav_read *********************************************************************** * **********************************************************************/ static int hb_dvdnav_read( hb_dvd_t * e, hb_buffer_t * b ) { hb_dvdnav_t * d = &(e->dvdnav); int result, event, len; int chapter = 0; int error_count = 0; while ( 1 ) { if (d->stopped) { return 0; } result = dvdnav_get_next_block( d->dvdnav, b->data, &event, &len ); if ( result == DVDNAV_STATUS_ERR ) { hb_error("dvdnav: Read Error, %s", dvdnav_err_to_string(d->dvdnav)); if (dvdnav_sector_search(d->dvdnav, 1, SEEK_CUR) != DVDNAV_STATUS_OK) { hb_error( "dvd: dvdnav_sector_search failed - %s", dvdnav_err_to_string(d->dvdnav) ); return 0; } error_count++; if (error_count > 10) { hb_error("dvdnav: Error, too many consecutive read errors"); return 0; } continue; } switch ( event ) { case DVDNAV_BLOCK_OK: // We have received a regular block of the currently playing // MPEG stream. // The muxers expect to only get chapter 2 and above // They write chapter 1 when chapter 2 is detected. if (chapter > 1) b->new_chap = chapter; chapter = 0; error_count = 0; return 1; case DVDNAV_NOP: /* * Nothing to do here. */ break; case DVDNAV_STILL_FRAME: /* * We have reached a still frame. A real player application * would wait the amount of time specified by the still's * length while still handling user input to make menus and * other interactive stills work. A length of 0xff means an * indefinite still which has to be skipped indirectly by some * user interaction. */ dvdnav_still_skip( d->dvdnav ); break; case DVDNAV_WAIT: /* * We have reached a point in DVD playback, where timing is * critical. Player application with internal fifos can * introduce state inconsistencies, because libdvdnav is * always the fifo's length ahead in the stream compared to * what the application sees. Such applications should wait * until their fifos are empty when they receive this type of * event. */ dvdnav_wait_skip( d->dvdnav ); break; case DVDNAV_SPU_CLUT_CHANGE: /* * Player applications should pass the new colour lookup table * to their SPU decoder */ break; case DVDNAV_SPU_STREAM_CHANGE: /* * Player applications should inform their SPU decoder to * switch channels */ break; case DVDNAV_AUDIO_STREAM_CHANGE: /* * Player applications should inform their audio decoder to * switch channels */ break; case DVDNAV_HIGHLIGHT: /* * Player applications should inform their overlay engine to * highlight the given button */ break; case DVDNAV_VTS_CHANGE: /* * Some status information like video aspect and video scale * permissions do not change inside a VTS. Therefore this * event can be used to query such information only when * necessary and update the decoding/displaying accordingly. */ { int tt = 0, pgcn = 0, pgn = 0; dvdnav_current_title_program(d->dvdnav, &tt, &pgcn, &pgn); if (tt != d->title) { // Transition to another title signals that we are done. return 0; } } break; case DVDNAV_CELL_CHANGE: /* * Some status information like the current Title and Part * numbers do not change inside a cell. Therefore this event * can be used to query such information only when necessary * and update the decoding/displaying accordingly. */ { int tt = 0, pgcn = 0, pgn = 0, c; dvdnav_current_title_program(d->dvdnav, &tt, &pgcn, &pgn); if (tt != d->title) { // Transition to another title signals that we are done. return 0; } c = FindChapterIndex(d->list_chapter, pgcn, pgn); if (c != d->chapter) { if (c < d->chapter) { // Some titles end with a 'link' back to the beginning so // a transition to an earlier chapter means we're done. return 0; } chapter = d->chapter = c; } } break; case DVDNAV_NAV_PACKET: /* * A NAV packet provides PTS discontinuity information, angle * linking information and button definitions for DVD menus. * Angles are handled completely inside libdvdnav. For the * menus to work, the NAV packet information has to be passed * to the overlay engine of the player so that it knows the * dimensions of the button areas. */ // mpegdemux expects to get these. I don't think it does // anything useful with them however. // The muxers expect to only get chapter 2 and above // They write chapter 1 when chapter 2 is detected. if (chapter > 1) b->new_chap = chapter; chapter = 0; return 1; break; case DVDNAV_HOP_CHANNEL: /* * This event is issued whenever a non-seamless operation has * been executed. Applications with fifos should drop the * fifos content to speed up responsiveness. */ break; case DVDNAV_STOP: /* * Playback should end here. */ d->stopped = 1; return 0; default: break; } } return 0; } /*********************************************************************** * hb_dvdnav_chapter *********************************************************************** * Returns in which chapter the next block to be read is. * Chapter numbers start at 1. **********************************************************************/ static int hb_dvdnav_chapter( hb_dvd_t * e ) { hb_dvdnav_t * d = &(e->dvdnav); int32_t t, pgcn, pgn; int32_t c; if (dvdnav_current_title_program(d->dvdnav, &t, &pgcn, &pgn) != DVDNAV_STATUS_OK) { return -1; } c = FindChapterIndex( d->list_chapter, pgcn, pgn ); return c; } /*********************************************************************** * hb_dvdnav_close *********************************************************************** * Closes and frees everything **********************************************************************/ static void hb_dvdnav_close( hb_dvd_t ** _d ) { hb_dvdnav_t * d = &((*_d)->dvdnav); if( d->dvdnav ) dvdnav_close( d->dvdnav ); if( d->vmg ) ifoClose( d->vmg ); if( d->reader ) DVDClose( d->reader ); free( d ); *_d = NULL; } /*********************************************************************** * hb_dvdnav_angle_count *********************************************************************** * Returns the number of angles supported. **********************************************************************/ static int hb_dvdnav_angle_count( hb_dvd_t * e ) { hb_dvdnav_t * d = &(e->dvdnav); int current, angle_count; if (dvdnav_get_angle_info( d->dvdnav, ¤t, &angle_count) != DVDNAV_STATUS_OK) { hb_log("dvdnav_get_angle_info %s", dvdnav_err_to_string(d->dvdnav)); angle_count = 1; } return angle_count; } /*********************************************************************** * hb_dvdnav_set_angle *********************************************************************** * Sets the angle to read **********************************************************************/ static void hb_dvdnav_set_angle( hb_dvd_t * e, int angle ) { hb_dvdnav_t * d = &(e->dvdnav); if (dvdnav_angle_change( d->dvdnav, angle) != DVDNAV_STATUS_OK) { hb_log("dvdnav_angle_change %s", dvdnav_err_to_string(d->dvdnav)); } } /*********************************************************************** * FindChapterIndex *********************************************************************** * Assumes pgc and cell_cur are correctly set, and sets cell_next to the * cell to be read when we will be done with cell_cur. **********************************************************************/ static int FindChapterIndex( hb_list_t * list, int pgcn, int pgn ) { int count, ii; hb_chapter_t *chapter; count = hb_list_count( list ); for (ii = 0; ii < count; ii++) { chapter = hb_list_item( list, ii ); if (chapter->pgcn == pgcn && chapter->pgn == pgn) return chapter->index; } return 0; } /*********************************************************************** * FindNextCell *********************************************************************** * Assumes pgc and cell_cur are correctly set, and sets cell_next to the * cell to be read when we will be done with cell_cur. **********************************************************************/ static int FindNextCell( pgc_t *pgc, int cell_cur ) { int i = 0; int cell_next; if( pgc->cell_playback[cell_cur].block_type == BLOCK_TYPE_ANGLE_BLOCK ) { while( pgc->cell_playback[cell_cur+i].block_mode != BLOCK_MODE_LAST_CELL ) { i++; } cell_next = cell_cur + i + 1; hb_log( "dvd: Skipping multi-angle cells %d-%d", cell_cur, cell_next - 1 ); } else { cell_next = cell_cur + 1; } return cell_next; } /*********************************************************************** * NextPgcn *********************************************************************** * Assumes pgc and cell_cur are correctly set, and sets cell_next to the * cell to be read when we will be done with cell_cur. * Since pg chains can be circularly linked (either from a read error or * deliberately) pgcn_map tracks program chains we've already seen. **********************************************************************/ static int NextPgcn( ifo_handle_t *ifo, int pgcn, uint32_t pgcn_map[MAX_PGCN/32] ) { int next_pgcn; pgc_t *pgc; pgcn_map[pgcn >> 5] |= (1 << (pgcn & 31)); pgc = ifo->vts_pgcit->pgci_srp[pgcn-1].pgc; next_pgcn = pgc->next_pgc_nr; if ( next_pgcn < 1 || next_pgcn >= MAX_PGCN || next_pgcn > ifo->vts_pgcit->nr_of_pgci_srp ) return 0; return pgcn_map[next_pgcn >> 5] & (1 << (next_pgcn & 31))? 0 : next_pgcn; } /*********************************************************************** * PgcWalkInit *********************************************************************** * Pgc links can loop. I track which have been visited in a bit vector * Initialize the bit vector to empty. **********************************************************************/ static void PgcWalkInit( uint32_t pgcn_map[MAX_PGCN/32] ) { memset(pgcn_map, 0, sizeof(pgcn_map) ); } /*********************************************************************** * dvdtime2msec *********************************************************************** * From lsdvd **********************************************************************/ static int dvdtime2msec(dvd_time_t * dt) { double frames_per_s[4] = {-1.0, 25.00, -1.0, 29.97}; double fps = frames_per_s[(dt->frame_u & 0xc0) >> 6]; long ms; ms = (((dt->hour & 0xf0) >> 3) * 5 + (dt->hour & 0x0f)) * 3600000; ms += (((dt->minute & 0xf0) >> 3) * 5 + (dt->minute & 0x0f)) * 60000; ms += (((dt->second & 0xf0) >> 3) * 5 + (dt->second & 0x0f)) * 1000; if( fps > 0 ) { ms += ((dt->frame_u & 0x30) >> 3) * 5 + (dt->frame_u & 0x0f) * 1000.0 / fps; } return ms; }